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Title:
MANUFACTURING METHOD OF Al-Mg-Si BASED ALUMINUM ALLOY PLATE FOR PRESS MOLDING AND Al-Mg-Si BASED ALUMINUM ALLOY PLATE FOR PRESS MOLDING
Document Type and Number:
Japanese Patent JP2008303455
Kind Code:
A
Abstract:

To provide a manufacturing method of an Al-Mg-Si based aluminum alloy plate for press molding having excellent bending property and an Al-Mg-Si based aluminum alloy plate for press molding.

The manufacturing method is directed for manufacturing the Al-Mg-Si based aluminum alloy plate having an orientation density (random ratio) of not smaller than 20 in the Cube orientation of the texture and orientation densities of not greater than 10 in the orientations other than the Cube orientation. This alloy plate is manufactured by the steps of: hot-rolling an ingot including, by mass%, 0.5-2.0% Si, 0.2-1.5% Mg, at least one element among not more than 1.0% Cu, not more than 0.5% Zn, not more than 0.5% Fe, not more than 0.3% Mn, not more than 0.3% Cr, not more than 0.2% V, not more than 0.15% Zr, not more than 0.1% Ti, and not more than 0.005% B, and the balance being Al and unavoidable impurities; cold-rolling the hot-rolled plate at a rolling reduction of 55-90%; softening the cold-rolled plate at 150-350C so as not to be completely recrystallized; cold-rolling it at a rolling reduction of 3-30%; solution-treating it; and quenching it.


Inventors:
Asano, Mineo
Uchida, Hidetoshi
Matsuda, Koichi
Application Number:
JP2007000154269
Publication Date:
December 18, 2008
Filing Date:
June 11, 2007
Export Citation:
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Assignee:
SUMITOMO LIGHT METAL IND LTD
International Classes:
C22F1/05; B21B3/00; C22C21/02; C22C21/06; C22F1/00
Domestic Patent References:
JP2003277870A
JP2005082827A
JP2004323952A
JP2005082845A
JP2005139530A
JP2000319741A
JP2003226927A
JP2003277870A
JP2005082827A
JP2004323952A
JP2005082845A
JP2005139530A
Attorney, Agent or Firm:
高橋 祥泰
岩倉 民芳
高橋 祥起